Security Windows

Advanced protection without compromising design.

Discover our range of high-performance security window systems engineered to meet the highest standards in forced entry resistance, ballistic protection, and blast mitigation. From discreet retrofitted solutions to fully certified systems for embassies, detention facilities, and critical infrastructure, our security windows combine robust construction with elegant aesthetics — all tested and certified to international standards.

Aluminium windows S6es-w series

A refined aluminium security window system offering elegant design variations with certified protection against break-ins (RC4), bullets (up to FB4-NS), and blasts (EXR3/EPR4). Engineered for demanding environments, including industrial and petrochemical applications.

Aluminium windows series S2es-w

Ultimate aluminium security window system, engineered for the highest levels of resistance against forced entry (RC6), bullets (FB7-NS), and blasts (EXR3 & EPR4). Designed for critical infrastructure, defence, and petrochemical applications.

Breakout resistant windows METAS®

Breakout-resistant aluminium windows designed for high-security facilities. The METAS® series prevents escape, suicide, and vandalism—offering RC4 protection without visible grilles.

Secondary window systems

Upgrade your existing windows without replacing them. SÄLZER’s Secondary Window Systems offer certified protection against forced entry, bullets, blasts, and fire—ideal for listed buildings, retrofits, and high-security needs.

Security windows SECUFIRE®

Steel security windows with ultra-slim profiles, SECUFIRE® combines RC4 break-in protection, FB4-NS bullet resistance, and optional fire, smoke, and blast protection—all within a sleek, architectural design.

Transaction windows

Ready-to-install high-security transaction windows with optional bullet, blast, fire, and smoke protection—ideal for embassies, police stations, and high-security environments.

Areas We Cover Across London & the South

From West London boroughs to the leafy edges of Surrey, our expert glazing services are available in a wide range of locations. Explore some of our most in-demand areas below — and click through to learn more about the services we offer in each one.

Hammersmith & Fulham

From heritage properties to contemporary apartments, we’ve delivered bespoke glazing installations across Hammersmith.

Kensington & Chelsea

We’re trusted in one of London’s most prestigious postcodes for ultra-slim glazing that complements period architecture.

Surrey

Our team regularly completes residential and commercial glazing projects throughout Surrey — from frameless rooflights to oversized sliding doors.

Twickenham

From glass box extensions to walk-on-glass features, we’ve transformed homes and gardens in Twickenham with stunning glazing solutions.

Not sure if we cover your location?

We’d still love to hear from you. Our team may be able to assist even if your area isn’t listed — just get in touch to check availability.

Call 0207 550 6550

What Our Customers Say

We take pride in delivering exceptional glazing solutions and outstanding customer service. Here’s what some of our happy clients have to say about working with Minimal Frame Projects.

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   Alison Burton 
 
 
 
  Absolutely delighted with our recent purchase of sliding doors for our new orangery, part of a major renovation of our home.  The quality is top-notch, and the sleek design will perfectly complement or modern kitchen and frame the amazing views we have. The door’s sturdy construction and beautiful minimalist finish add a touch of elegance to the space. Highly recommend this product to anyone looking to enhance their home with stylish and functional sliding doors.
  
 
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   James Trinder 
 
 
 
  Minimal Frames have been outstanding throughout the process, from planning to install and aftercare. At all times their communication has been top-notch; fast and effective. Quality of the glazing itself is excellent, the installation process was pain free and the windows and pivot door look incredible. They’ve been really strong on aftercare too, checking in that all works well and correcting a very minor issue quickly. I really cannot fault any part of our experience and wouldn’t hesitate to use them again and recommend to others.
  
 
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   Narmina Hasanova 
 
 
 
  Bob and his team have taken on our tricky glass extension installation, embraced its complexity and delivered it to perfection. It truly is a stunning addition to the house. The team that worked on site was extremely pleasant; always on time, quiet and polite. The project turned out to be long for its complexity, but the final result was worth the wait. We are very pleased with the outcome and hope it will keep us cool even in the heat of summer. Thank you MFP team! With kind regards, Emil and Narmina
  
 
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   Elliott Raggio 
 
 
 
  I am pleased to say that overall, I am delighted with the honorable customer service from Robert the company director at Minimal Frame Projects. Thank you to the surveyor and installation team who executed a challenging install for my bespoke Glass Pivot exterior door. Credit does go to Robert for being understanding, a man of his word and overcoming obstacles to ensure complete customer satisfaction.
  
 
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   Bruce Fraser 
 
 
 
  Ultimately an excellent result. Great product. Bob, Mollie and the team worked hard at solving problems and timing. We appreciated their effort and approach.
  
 
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   G B 
 
 
 
  Bob and Minimal Frame have stepped in to help sort out problems with another glazing company. He has kept us well informed throughout and has worked tirelessly to deal with the manunufacturers to get the doors delivered and the install started. We were 90% done by Christmas which was a huge relief. I've found Bob to be straightforward, transparent and responsive and am very grateful for his help fixing our previous issues. Additionally, his install team have been highly professional and meticulous in getting the install right.
  
 
  
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Visit Our Showroom in Surbiton

Visit Our Showroom & Explore Premium Glazing Solutions

Experience the quality of our slimline glass doors, windows, and structural glazing in person. Whether you're planning a project or need expert advice, our team is here to help.

Located in Surbiton, we welcome homeowners, architects, and developers to see our range up close.

Call 0207 550 6550